If You Are Using WINS, You Are Not WINNING WINS, or Windows Internet Name Service exists so that NetBIOS hosts can communicate with TCP/IP hosts. Wait, did we just step into the network protocol time machine? In fact, we did! NetBIOS was developed for IBM in 1983 by a company called Sytec, and later adopted by Microsoft (See "Understanding NetBIOS and Windows Server 2003" for more historical information on our journey back in time). So the big question remains, why are people still running WINS and/or NetBIOS? My guess is that a vendor provided you a solution, stuck you with an operating system that is old and outdated, and now you’re stuck maintaining the application and operating system (refer to Rafal Los's great post: Supporting "Unmaintainable" Applications). Any time you can enable yourself to rid the network and systems of old protocols, it’s a win for security. The harder part is ridding your network of the things that rely on those protocols. Once you get there however, not only will you have a network that is easier to maintain (lets face it, WINS was one more thing to go wrong with Windows networking), it will be slightly more secure as well. MS11-035 addresses a privately reported, remotely exploitable, vulnerability in WINS, as if the attackers need something else they "could" exploit. "To The Cloud!"